Re: [Boost-users] [accumulators] Any was to reset an accumulator_set object?

Subject: Re: [Boost-users] [accumulators] Any was to reset an accumulator_set object?
From: er (erwann.rogard_at_[hidden])
Date: 2009-03-01 18:12:46

dhruva wrote:
> Hello,
>  I am using boost::accumulator_set to compute mean. After every 100 samples, I need to start afresh. Since I am using accumulator_set as a member variable in a class 

(I get samples one at a time and need to preserve accumulator_set object 
across function calls), I need some mechanism to reset it to its initial 
state.

I am not doing anything fancy like using droppable functionality. As a 
real crude work around, I am keeping 2 objects. The first is not used 
for any computing and hence

its state is same throughout. The computing is done using the second 
object. After 100 samples, I just copy the first onto the second hoping 
the state of second object will

be same as first which is the initial state.
>  Is there a better way to achieve the above requirement?
> 
> -dhruva
> 
> 
> 
>       Download prohibited? No problem. CHAT from any browser, without download. Go to http://in.webmessenger.yahoo.com/

As a user of this library I'd think that if n+m is the current iteration 
and you want to go back to state n, the easiest way -as you say- is to 
create a copy of the set at n. But if n = 0, perhaps obj.set = 
set_type(initial parameters)?